OPINION
¶ 1 Dеfendant Toribio Rodriguez appeals his conviction and death sentence for first-degree murder, and his convictions and sentences for two counts of sexual assault and one count of first-degree burglary. 1 We review this case on direct, automatic appeal pursuant to Arizona Revised Statutes (A.R.S.) section 13-4031. For the following reasons, we reverse on all counts and remand for retrial.
I.
¶ 2 Dawn Dearing (the victim) lived alone in an apartment complex in Tucson. She spent the evening of August 24, 1988, at her apartment with a co-worker. The victim became intoxicated 2 before the co-worker left. *60 The next afternoon, a friend knocked on her door but heard no answer. The friend returned several times that day and left notes for the victim.
¶ 3 On August 26, the friend returnеd to the apartment and found the door unlocked. Opening the door, she discovered that the apartment had been ransacked. A maintenance man entered the apartment, found the victim’s body, and then remained outside the apartment door until police arrived.
¶ 4 The police found the victim on the bathroom floor in a pool of blood. She was clad only in a nightgown, which had been pulled up over her chest. She had been severely beaten and repeatedly slashed and stabbed. Two objects, a curling iron and a knife handle (with no blade), had been inserted into the victim’s vagina. The curling iron was left switched on.
¶5 The police found several pieces of broken knives on the floor beside the body, including a knife blade bearing a palm print. James Wallace, a fingerprint examiner for the Tucson Police Department, examined the blade. According to Wallace’s trial testimony, the print on the blade matched defendant’s palm. Further, in response to a question asked by the jury during deliberations, Wallace testified that the print was impressed in “body fluid.” The palm print provided the only physical evidence linking defendant to the crime.
II6 At trial, defendant denied that the palm print was his. He testified that if it was his print, he did not know how it came to be on the knife blade. Defendant further testified that he did not know the victim. He denied having ever been in her apartment, although he lived in the adjacent apartment complex at the time of the killing.
¶ 7 Following two days of testimony, the jury convicted defendant on December 12, 1996. The court sentenced defendant to death after holding a hearing on aggravation and mitigation.
¶ 8 Defendant raises multiple issues on appeal. Because we reverse defendant’s convictions, we need not address the arguments related to sentencing.
II.
¶ 9 Defendant first argues that he is entitled to a judgment of acquittal because the evidence presented was insufficient to support his convictions. We disagree. 3
¶ 10 Judgment of acquittal is required when no substantial evidence supports a conviction.
State v. Hughes,
¶ 11 Defendant’s argument centers on the lack of any physical evidence other than his palm print linking him to the crime. We have held, however, that fingerprints
4
alone may support a сonviction whén “not found in a place and under circumstances where they could have been reasonably made at a time other than the time of the commission of the offense.”
State v. Carter,
¶ 12 Other Arizona cases have sustained convictions resting on fingerprint evidence if the jury could reasonably infer that the prints could only have been impressed when the crime was committed.
See State v. Burton,
¶ 13 In this case, the palm print evidence provides a sufficient link between defendant and the killing because the circumstances do not reasonably support the inference that the impression occurred other than during commission of the crime. The position of the print was inconsistent with regulаr use of a knife but was consistent with
someone
grasping the blade to slash a victim after the handle had broken off.
C.f. Taylor,
III.
¶ 14 Defendant also argues that he is entitled to a new trial because the trial court refused to instruct the jury with respect to his alibi theory. We agree.
¶ 15 At trial, defendant relied on the defense of “alibi.” He attempted to show he was at work, away from the victim’s apartment, at the time of the killing. The trial judge, however, concluded that the jury should not hear defendant’s proffered alibi instruction.
A.
¶ 16 A party is entitled to an instruction on any theory reasonably supported by the evidence.
State v. Bolton,
¶ 17 In deciding whether defendant was entitled to an alibi instruction, we first consider the sufficiency of the evidence to support an alibi defense. Evidence tending to show that the defendant had no opportunity to commit the crime because he was at anоther place when the crime occurred raises the alibi defense.
State v. Berry,
¶ 18 With respect to the time of the killing, the state established the time of death within a several-day range. Other evidence, if believed, tended to narrow the time to within a few hours. The state’s forensic pathologist testified that the killing probably occurred sometime early in the period between 6 p.m. on Tuesday, August 23 and 6 p.m. on Thursday, August 25. A friend testified that he saw the victim alive late in the evening of August 24. A neighbor heard the victim’s voice, arguing with an unidentified man, at approximately 2 a.m. on August 25. Finally, a co-worker testified that the victim did not come to work on August 25, although she was expected about 6 a.m.
¶ 19 To establish his whereabouts at the time of the crime, defendant presented time records from work, the testimony of a coworker, and his own testimony. Defendant testified that he worked Thursday, August 25 from 12:34 a.m. until 4:56 a.m.; that he could not cheat on his hours; that he had no car and therefore no way to drive to the scene during work time; and that he went home and to bed immediately after he clocked out.
¶ 20 Resolving all inferences favorably to appellant, the jury could have found that the killing occurred on August 25 between 2 a.m., when a neighbor heard the victim speaking, and some time before 6 a.m., when thе victim’s co-worker expected her. The jury could have further found that defendant was at work on August 25 until 4:56 a.m. Considering defendant’s testimony that he went home and straight to bed after work, defendant presented evidence that his location prevented him from committing the crime.
See Smith v. State,
B.
¶ 21 Having concluded that the evidence reasonably supported an alibi defense, we turn to the question whether the trial court erred by failing to givе an alibi instruction. Although this court has approved alibi instructions given when a defendant presented evidence of being elsewhere at the time of the charged crime, we' have not decided whether a trial court’s refusal to give an adequately supported alibi instruction can be reversible error.
See Berry,
¶ 22 Other jurisdictions are split with respect to the necessity of an alibi instruction. The majority view holds that “the accused is entitled to have the court, upon request, give proper and adequate instructions upon the defense of alibi, if such a defense is supported by evidence____” 75B Am.Jur.2d
Trial
§ 1261 (1992). Courts following the majority view reason that a separate alibi instruction prevents the jury from erroneously believing that the defendant has the burden of рroving that he was elsewhere.
See Ferguson v. State,
*63
¶ 23 The state urges us to adopt the minority view, under which the court need not separately instruct on alibi.
See State v. Hess,
¶ 24 We agree that alibi is not an affirmative defense.
See Singh v. State,
¶ 25 A defendant is not required to prove an alibi; rather, the jury must acquit a defendant if the alibi evidence raises a reasonable doubt about whether the defendant committed the crime.
Id.
The alibi instruction therefore redresses the fundamental risk that the jury may interpret the defendant’s failure to prove his alibi as proof of guilt. Moreover, standard instructions about the burden of proof provide a poor substitute for a properly supported alibi instruction. When the court does not expressly instruct the jury on alibi, jurors may incorrectly assume that the defendant bears the burden оf proving his alibi. Absent an alibi instruction, then, the jury may be mistaken about this crucial point.
Accord Duckett,
¶26 In this case, defendant requested an instruction on alibi based on evidence that reasonably supported an inference that the killing occurred during the time that defendant was either at work or at home. Because the standard burden of proof instructions do not redress the risk of burdеn shifting engendered by alibi evidence, the trial court erred when it refused to give an alibi instruction.
C.
¶27 The trial court’s failure to give an alibi instruction does not mandate reversal. Rather, we apply a harmless error analysis when the trial court gives incorrect instructions.
See State v. Amaya-Ruiz,
D.
¶28 The state argues that defendant’s requested alibi instruction is a comment on the evidence that, if given, would violate the Arizona Constitution, article VI, section 27. 5 We disagree.
¶ 29 To violate Arizona’s constitutional prohibition against commenting on the evidеnce, the court must express an opinion as to what the evidence proves.
State v. Barnes,
*64 ¶ 30 Defendant requested the following alibi instruction from the Recommended Arizona Jury Instructions (RAJI):
The defendant has produced evidеnce of being absent at the time and place the alleged crime was committed. If you have a reasonable doubt whether the defendant was present at the time and place the alleged crime was committed, you must find the defendant not guilty.
See RAJI (Criminal) No. 12 (1989). 6 Unlike a comment on the evidence, the requested instruction does not suggest to the jury that the evidence should lead them to any particular result. Rather, it reframes the burden of proof in the context of appellant’s alibi theory. 7
IY.
¶ 31 Defendant also argues that he is entitled to a new trial because the prosecution failed to disclose matters related to the opinion of the state’s fingerprint examiner, James Wallace. Because we remand fоr a new trial on other issues, we do not consider whether the prosecution’s behavior would entitle defendant to a new trial. We do, however, express our concern that the prosecution may have failed in its special duty to ensure that defendant received a fair trial.
¶ 32 The record includes substantial support for defendant’s assertion that the рrosecutor’s failure to disclose the substance of Wallace’s opinion, along with related testing reports or other materials, 8 both violated Rule 15.1(a), Ariz. R.Crim. P., and avoided defendant’s pretrial discovery request.
¶ 33 We emphasize that the responsibilities of a prosecutor go beyond the duty to convict defendants. Pursuant to its role of “minister of justice,” the prosecution has a duty to see that defendants receive a fair trial. Ariz. R. Sup.Ct. 42, E.R. 3.8, comment;
State v. Cornell,
V.
¶ 34 For the foregoing reasons, we reverse defendant’s convictions and sentences and remand for a new.trial.
Notes
. This appeal- is from defendant’s second trial. In
State v. Rodriguez,
. Trial testimony established that the victim’s blood alcohol level at the time of death was over *60 .35 percent.
. On appeal after defendant’s first trial, we held that substantial evidence supported defendant’s first conviction. We declined to set forth a detailed analysis, noting that the trial court would have to rule on any motion for directed verdict based on the record made at retrial.
State v. Rodriguez,
. At trial, uncontroverted expert testimony established that palm prints are identical to fingerprints with respect to their power to match and identify members of the population.
. Ariz. Const. art. VI, § 27, provides, in pertinent part: “Judges shall not chargе juries with respect to matters of fact, nor comment thereon, but shall declare the law.”
. The RAJI alibi instruction was revised in 1996. RAJI (Criminal) 11 now states:
The state has the burden of proving that the defendant was present at the time and place the alleged crimé was committed. If you have a reasonable doubt whether the defendant was present at the time and place the alleged crime was committed, you must find the defendant not guilty.
This language more clearly reflects the instruction’s utility in redressing the risk of burden shifting. However, the revised instruction also includes an alternate paragraph, which retains the pre-1996 wording. The second paragraph of RAJI (Criminal) 11 appears redundant and unnecessary when the jury properly receivеs the portion of the instruction quoted above.
. In
State v. West,
. Defendant’s arguments concern only matters related to Wallace’s testimony elicited in response to a question the jury submitted during deliberations. Defendant does not allege that the state failed to disclose materials related to Wallace’s trial testimony.
